Florida’s Department of Health is looking into claims that a Gulf Coast school made hundreds of people sick from diseases like cancer. Health officials are asking alumni and faculty of the school affected by cancer to submit their health records. So far, the department says there is “no evidence Bayshore High School is the source of any disease clusters.” Manuel Bojorquez reports. Source

The “West Wing” star made sure to show his gratitude to firefighters who battled the Thomas Fire near his Santa Barbara home over the weekend. Source

For the first time in more than two decades, arrests and clues about what may have happened to the college student who disappeared in 1996, and whose remains have not been found. Source

President Trump said he would not fire special counsel Robert Mueller, even as a lawyer for Mr. Trump’s transition team says Mueller wrongly obtained their emails. CBS News chief White House correspondent Major Garrett takes a look at the issues for CBSN. Source

North Korea is behind the WannaCry cyberattack that plagued hundreds of thousands of computers earlier this year, according to an op-ed published Monday night by White House homeland security adviser Tom Bossert. Source

A CBS News poll this year found most Americans believe there is intelligent life on other planets. But have aliens visited Earth? Tony Dokoupil reports on a secretive Pentagon program dedicated to UFOs. Source

In his national security address today, President Trump of a “new era of competition” with China and Russia. If this marks a return to a Cold War mindset, it’s worth noting the U.S. is falling behind in one of the coldest places on earth. Carter Evans reports on U.S.-Russia tensions in the Arctic. Source

The director of the Centers for Disease Control and Prevention is defending her agency following a report that officials compiled a list of seven “dirty words” that should not be used when asking Congress for funding. Chief medical correspondent Dr. Jon LaPook reports. Source

Christian Bale is well-known for his role as Batman in the hit “The Dark Knight” franchise. He also won an Oscar for his role in the 2010 movie, “The Fighter.” His new movie, “Hostiles,” is a western drama set in 1892. It follows Army Capt. Joseph Blocker, played by Bale, on a journey to escort a dying Cheyenne war chief and his family back to their native land. Bale joins “CBS This Morning” to discuss the relevance of “Hostiles” today, and how he transformed his look to play the role of former Vice President Dick Cheney. Source

Ksenia Sobchak announced she’s running for president against Vladimir Putin “to change the situation in Russia, because no one else stood up.” Elizabeth Palmer reports. Source